[Nachum]

Which wouldn't have anything to do with the "if your mother is Jewish..." rule, would it?

The matrilinial descent rule for Judaism is as much nationalistic as religious. This, however, is not the source of the race business. Judaism and race is more of a form of epithet. It was/is used as a way to discriminate, ghetto-ize, and attack.

[A.J.Armitage]

The matrilinial descent rule for Judaism is as much nationalistic as religious.

Well then, why can't they be Jews in the nationalistic sense?